# 新大小杜
# 在读研究生
# 开发时间，2021/4/7 18:29
s='hello,python'
print('1.',s.isidentifier()) #False
print('2.','hello'.isidentifier())  #True
print('3.','张三_'.isidentifier())   #True
print('4.','张三_123'.isidentifier()) #True

print('5.','\t'.isspace())  #True

print('6.','abc'.isalpha())  #True
print('7.','张三'.isalpha())  #True
print('8.','张三1'.isalpha()) #False

print('9.','123'.isdecimal()) #True
print('10.','123四'.isdecimal()) #False
print('11','ⅡⅡⅡ'.isdecimal()) # False

print('12.','123'.isnumeric())  #True
print('13.','123四'.isnumeric()) #True
print('14','ⅡⅡⅡ'.isnumeric()) #True

print('15.','abc1'.isalnum())  #True
print('16.','张三123'.isalnum()) #True
print('17.','abc!'.isalnum())  #False


